I've got a wasp .26 and it's almost too much power. Thing really rips, and is decent priced to boot. If you've read past posts about them, the latest batch has the LSN and the o-ring probs fixed. Mine ran great right out of the box. If you get one, you'll quickly find the pull start sucks. Broke & fixed mine twice before giving up on it. Suggest a strong starter box, or maybe a rotostart.